sulfasalazine and its Impurities

A sulfa drugs class of medication, Sulfasalazine is known in the trade name of Azulfidine. It is used in the treatment of rheumatoid arthritis and ulcerative colitis. Sulfasalazine metabolizes to sulfapyridine.Reference standards of Sulfasalazine API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

Displaying 45 results for sulfasalazine Impurities
Drug Reference Standards & Impurity Synthesis in India
PA 19 31000

Sulfasalazine

Sulfasalazine

  • Catalogue No.:PA 19 31000

  • CAS :

    599-79-1

  • Molecular Formula : C18H14N4O5S

  • Molecular Weight : 398.39

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31010

Sulfasalazine - Impurity A

2,4-Bis[[p-(2-pyridylsulfamoyl)phenyl]azo]hydroxybenzene

  • Catalogue No.:PA 19 31010

  • CAS :

    1391062-35-3

  • Molecular Formula : C28H22N8O5S2

  • Molecular Weight : 614.65

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31020

Sulfasalazine - Impurity B

2-Hydroxy-3,5-bis[2-[4-(pyridin-2-ylsulfamoyl)phenyl]diazenyl]benzoic Acid

  • Catalogue No.:PA 19 31020

  • CAS :

    1391062-49-9

  • Molecular Formula : C29H22N8O7S2

  • Molecular Weight : 658.66

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31030

Sulfasalazine - Impurity C

2-Hydroxy-5-[2-[4-(2-imino-1(2H)-pyridinyl)phenyl]diazenyl]benzoic Acid

  • Catalogue No.:PA 19 31030

  • CAS :

    66030-25-9

  • Molecular Formula : C18H14N4O3

  • Molecular Weight : 334.33

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31040

Sulfasalazine - Impurity D

4-[2-(2-hydroxyphenyl)diazenyl]-N-(pyridin-2-yl)benzenesulfonamide

  • Catalogue No.:PA 19 31040

  • CAS :

    66364-70-3

  • Molecular Formula : C17H14N4O3S

  • Molecular Weight : 354.38

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31050

Sulfasalazine - Impurity E

2-hydroxy-4'-(pyridin-2-ylsulfamoyl)-5-[2-[4-(pyridin-2-ylsulfamoyl)phenyl]diazenyl] biphenyl-3-carboxylic acid

  • Catalogue No.:PA 19 31050

  • CAS :

    1391062-34-2

  • Molecular Formula : C29H22N6O7S2

  • Molecular Weight : 630.65

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31060

Sulfasalazine - Impurity F

Sulfasalazine 3-Isomer

  • Catalogue No.:PA 19 31060

  • CAS :

    66364-71-4

  • Molecular Formula : C18H14N4O5S

  • Molecular Weight : 398.39

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31070

Sulfasalazine - Impurity G

5-[2-[4 ,5-bis(pyridin-2-ylsulfamoyl)biphenyl-2-yl]diazenyl]-2-hydroxybenzoic acid

  • Catalogue No.:PA 19 31070

  • CAS :

    1391062-37-5

  • Molecular Formula : C29H22N6O7S2

  • Molecular Weight : 630.65

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31080

Sulfasalazine - Impurity H

Salicylic Acid

  • Catalogue No.:PA 19 31080

  • CAS :

    69-72-7

  • Molecular Formula : C7H6O3

  • Molecular Weight : 138.12

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31090

Sulfasalazine - Impurity I

2-Hydroxy-5-[2-(4-sulfophenyl)diazenyl]benzoic acid

  • Catalogue No.:PA 19 31090

  • CAS :

    21542-82-5

  • Molecular Formula : C13H10N2O6S

  • Molecular Weight : 322.29

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31100

Sulfasalazine - Impurity J

Sulfapyridine

  • Catalogue No.:PA 19 31100

  • CAS :

    144-83-2

  • Molecular Formula : C11H11N3O2S

  • Molecular Weight : 249.29

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31510

Sulfasalazine Derivative

Sulfasalazine Derivative

  • Catalogue No.:PA 19 31510

  • CAS :

    42753-55-9

  • Molecular Formula : C19H16N4O5S

  • Molecular Weight : 412.42

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Drug Reference Standards & Impurity Synthesis in India
PA STI 058870

5-Aminosalicylic Acid-13C6 Hydrochloride

5-Aminosalicylic Acid-13C6 Hydrochloride

  • Catalogue No.:PA STI 058870

  • CAS :

    1261398-47-3

  • Molecular Formula : C13C6H8ClNO3

  • Molecular Weight : 195.55

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Drug Reference Standards & Impurity Synthesis in India
PA STI 080460

Sulfasalazine-d4

Sulfasalazine-d4

  • Catalogue No.:PA STI 080460

  • CAS :

    1346606-50-5

  • Molecular Formula : C18H10D4N4O5S

  • Molecular Weight : 402.42

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Drug Reference Standards & Impurity Synthesis in India
PAI 19 004010

(E)-4-((5-Amino-2-hydroxyphenyl)diazenyl)-N-(pyridin-2-yl)benzenesulfonamide

(E)-4-((5-Amino-2-hydroxyphenyl)diazenyl)-N-(pyridin-2-yl)benzenesulfonamide

  • Catalogue No.:PAI 19 004010

  • CAS :

    NA

  • Molecular Formula : C17H15N5O3S

  • Molecular Weight : 369.40

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Drug Reference Standards & Impurity Synthesis in India
PAI 19 004020

(E)-4-((5-Bromo-2-hydroxyphenyl)diazenyl)-N-(pyridin-2-yl)benzenesulfonamide

(E)-4-((5-Bromo-2-hydroxyphenyl)diazenyl)-N-(pyridin-2-yl)benzenesulfonamide

  • Catalogue No.:PAI 19 004020

  • CAS :

    NA

  • Molecular Formula : C17H13BrN4O3S

  • Molecular Weight : 433.28

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Drug Reference Standards & Impurity Synthesis in India
PAI 19 004030

1-(4-Aminophenyl)pyridin-2(1H)-one

1-(4-Aminophenyl)pyridin-2(1H)-one

  • Catalogue No.:PAI 19 004030

  • CAS :

    13143-47-0

  • Molecular Formula : C11H10N2O

  • Molecular Weight : 186.20

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Drug Reference Standards & Impurity Synthesis in India
PAI 19 004040

N-(4-(N-(6-Methylpyridin-2-yl)sulfamoyl)phenyl)acetamide

N-(4-(N-(6-Methylpyridin-2-yl)sulfamoyl)phenyl)acetamide

  • Catalogue No.:PAI 19 004040

  • CAS :

    328262-11-9

  • Molecular Formula : C14H15N3O3S

  • Molecular Weight : 305.35

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Drug Reference Standards & Impurity Synthesis in India
PAI 19 004050

4-Amino-N-(6-methylpyridin-2-yl)benzenesulfonamide

4-Amino-N-(6-methylpyridin-2-yl)benzenesulfonamide

  • Catalogue No.:PAI 19 004050

  • CAS :

    73497-98-0

  • Molecular Formula : C12H13N3O2S

  • Molecular Weight : 263.32

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31520

2-Hydroxy-5-((4-(N-(4-(N-(pyridin-2-yl)sulfamoyl)phenyl)sulfamoyl)phenyl)diazenyl)benzoic Acid

2-Hydroxy-5-((4-(N-(4-(N-(pyridin-2-yl)sulfamoyl)phenyl)sulfamoyl)phenyl)diazenyl)benzoic Acid

  • Catalogue No.:PA 19 31520

  • CAS :

    2033064-44-5

  • Molecular Formula : C24H19N5O7S2

  • Molecular Weight : 553.56

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31530

2-Hydroxy-5-((4-sulfamoylphenyl)diazenyl)benzoic Acid

2-Hydroxy-5-((4-sulfamoylphenyl)diazenyl)benzoic Acid

  • Catalogue No.:PA 19 31530

  • CAS :

    139-56-0

  • Molecular Formula : C13H11N3O5S

  • Molecular Weight : 321.31

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31540

2-Hydroxy-5-((4-(N-(5-(4-(N-(pyridin-2-yl)sulfamoyl)phenyl)pyridin-2-yl)sulfamoyl)phenyl)diazenyl)benzoic Acid

2-Hydroxy-5-((4-(N-(5-(4-(N-(pyridin-2-yl)sulfamoyl)phenyl)pyridin-2-yl)sulfamoyl)phenyl)diazenyl)benzoic Acid

  • Catalogue No.:PA 19 31540

  • CAS :

    NA

  • Molecular Formula : C29H22N6O7S2

  • Molecular Weight : 630.65

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Drug Reference Standards & Impurity Synthesis in India
PA ICRS0424

Sulfasalazine (ICRS0424)

Sulfasalazine (ICRS0424)

  • Catalogue No.:PA ICRS0424

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA EPS2155000

Sulfasalazine (S2155000)

Sulfasalazine (S2155000)

  • Catalogue No.:PA EPS2155000

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA EPS2155010

Sulfasalazine derivative for resolution (S2155010)

Sulfasalazine derivative for resolution (S2155010)

  • Catalogue No.:PA EPS2155010

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA USP1636005

Sulfasalazine (1636005)

Sulfasalazine (1636005)

  • Catalogue No.:PA USP1636005

  • CAS :

    599-79-1

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA BP779RB

sulfasalazine (779RB)

sulfasalazine (779RB)

  • Catalogue No.:PA BP779RB

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31550

4-(Acetylamino)-3-bromobenzenesulfonyl Chloride

4-(Acetylamino)-3-bromobenzenesulfonyl Chloride

  • Catalogue No.:PA 19 31550

  • CAS :

    88963-75-1

  • Molecular Formula : C8H7BrClNO3S

  • Molecular Weight : 312.57

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31560

N-Acetylsulfamerazine

N-Acetylsulfamerazine

  • Catalogue No.:PA 19 31560

  • CAS :

    127-73-1

  • Molecular Formula : C13H14N4O3S

  • Molecular Weight : 306.34

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Drug Reference Standards & Impurity Synthesis in India
PA 19 31570

N-Acetyl Sulfapyridine

N-Acetyl Sulfapyridine

  • Catalogue No.:PA 19 31570

  • CAS :

    19077-98-6

  • Molecular Formula : C13H13N3O3S

  • Molecular Weight : 291.33

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Drug Reference Standards & Impurity Synthesis in India
PA 19 0311000

Disodium 2-hydroxy-5-[2-(4-sulfophenyl)diazenyl]benzoic acid

Disodium 2-hydroxy-5-[2-(4-sulfophenyl)diazenyl]benzoic acid

  • Catalogue No.:PA 19 0311000

  • CAS :

    6054-99-5

  • Molecular Formula : C13H8N2Na2O6S

  • Molecular Weight : 366.25

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Drug Reference Standards & Impurity Synthesis in India
PA 19 0311001

4,4'-Azanediylbis(N-(pyridin-2-yl)benzenesulfonamide)

4,4'-Azanediylbis(N-(pyridin-2-yl)benzenesulfonamide)

  • Catalogue No.:PA 19 0311001

  • CAS :

    2033064-46-7

  • Molecular Formula : C22H19N5O4S2

  • Molecular Weight : 481.55

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Drug Reference Standards & Impurity Synthesis in India
PAI 19 004051

4-Chloro-N-(pyridin-2-yl)benzenesulfonamide

4-Chloro-N-(pyridin-2-yl)benzenesulfonamide

  • Catalogue No.:PAI 19 004051

  • CAS :

    1213-38-3

  • Molecular Formula : C11H9ClN2O2S

  • Molecular Weight : 268.72

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Drug Reference Standards & Impurity Synthesis in India
PAI 19 004052

4-Bromo-N-(pyridin-2-yl)benzenesulfonamide

4-Bromo-N-(pyridin-2-yl)benzenesulfonamide

  • Catalogue No.:PAI 19 004052

  • CAS :

    3609-89-0

  • Molecular Formula : C11H9BrN2O2S

  • Molecular Weight : 313.17

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Drug Reference Standards & Impurity Synthesis in India
PAI 19 004054

N-(Pyridin-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzenesulfonamide

N-(Pyridin-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzenesulfonamide

  • Catalogue No.:PAI 19 004054

  • CAS :

    2033064-47-8

  • Molecular Formula : C17H21BN2O4S

  • Molecular Weight : 360.24

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Drug Reference Standards & Impurity Synthesis in India
PAI 19 004055

2-Hydroxy-4'-(N-(pyridin-2-yl)sulfamoyl)-[1,1'-biphenyl]-3-carboxylic Acid

2-Hydroxy-4'-(N-(pyridin-2-yl)sulfamoyl)-[1,1'-biphenyl]-3-carboxylic Acid

  • Catalogue No.:PAI 19 004055

  • CAS :

    2512199-33-4

  • Molecular Formula : C18H14N2O5S

  • Molecular Weight : 370.38

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Drug Reference Standards & Impurity Synthesis in India
PAI 19 004056

3-Bromo-2-hydroxybenzoic Acid

3-Bromo-2-hydroxybenzoic Acid

  • Catalogue No.:PAI 19 004056

  • CAS :

    3883-95-2

  • Molecular Formula : C7H5BrO3

  • Molecular Weight : 217.02

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Drug Reference Standards & Impurity Synthesis in India
PA 19 0311002

Descarboxysulfasalazine

Descarboxysulfasalazine

  • Catalogue No.:PA 19 0311002

  • CAS :

    330482-44-5

  • Molecular Formula : C17H14N4O3S

  • Molecular Weight : 354.38

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Drug Reference Standards & Impurity Synthesis in India
PAI 19 004057

3-Bromo-2-hydroxy-5-((4-(N-(pyridin-2-yl)sulfamoyl)phenyl)diazenyl)benzoic Acid

3-Bromo-2-hydroxy-5-((4-(N-(pyridin-2-yl)sulfamoyl)phenyl)diazenyl)benzoic Acid

  • Catalogue No.:PAI 19 004057

  • CAS :

    NA

  • Molecular Formula : C18H13BrN4O5S

  • Molecular Weight : 477.29

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Drug Reference Standards & Impurity Synthesis in India
PA 19 0311003

(E)-2-Hydroxy-5-((4-sulfophenyl)diazenyl)benzoic acid

(E)-2-Hydroxy-5-((4-sulfophenyl)diazenyl)benzoic acid

  • Catalogue No.:PA 19 0311003

  • CAS :

    1310803-27-0

  • Molecular Formula : C13H10N2O6S

  • Molecular Weight : 322.29

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Drug Reference Standards & Impurity Synthesis in India
PA IPRS 78 19

Sulfasalazine (IPRS/78/19)

Sulfasalazine (IPRS/78/19)

  • Catalogue No.:PA IPRS 78 19

  • CAS :

    NA

  • Molecular Formula : NA

  • Molecular Weight : NA

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Drug Reference Standards & Impurity Synthesis in India
PA 19 0311004

(E)-2-Hydroxy-5-((4-(2-oxopyridin-1(2H)-yl)phenyl)diazenyl)benzoic Acid

(E)-2-Hydroxy-5-((4-(2-oxopyridin-1(2H)-yl)phenyl)diazenyl)benzoic Acid

  • Catalogue No.:PA 19 0311004

  • CAS :

    NA

  • Molecular Formula : C18H13N3O4

  • Molecular Weight : 335.32

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Drug Reference Standards & Impurity Synthesis in India
PA 19 0311005

(E)-2-Hydroxy-5-((4-(N-(pyridin-2-yl)sulfamoyl)phenyl)diazenyl)benzoic Acid

(E)-2-Hydroxy-5-((4-(N-(pyridin-2-yl)sulfamoyl)phenyl)diazenyl)benzoic Acid

  • Catalogue No.:PA 19 0311005

  • CAS :

    737754-28-8

  • Molecular Formula : C18H14N4O5S

  • Molecular Weight : 398.39

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Drug Reference Standards & Impurity Synthesis in India
PA 19 0311006

(E)-2-(4-(N-(Pyridin-2-yl)sulfamoyl)phenoxy)-5-((4-(N-(pyridin-2-yl)sulfamoyl)phenyl)diazenyl)benzoic Acid

(E)-2-(4-(N-(Pyridin-2-yl)sulfamoyl)phenoxy)-5-((4-(N-(pyridin-2-yl)sulfamoyl)phenyl)diazenyl)benzoic Acid

  • Catalogue No.:PA 19 0311006

  • CAS :

    NA

  • Molecular Formula : C29H22N6O7S2

  • Molecular Weight : 630.65

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Drug Reference Standards & Impurity Synthesis in India
PA STI 090122

Sulfapyridine-13C6

Sulfapyridine-13C6

  • Catalogue No.:PA STI 090122

  • CAS :

    1228182-45-3

  • Molecular Formula : C513C6H11N3O2S

  • Molecular Weight : 255.24

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